Tail Light Issue

[7rider]

Ok, went to put on new head light/tail lights & notice that my bag(under saddle) blocks people from seeing my tail light. Am I doing something wrong here? Do I need a new bag?

Are you sure it's not visible?
If you're standing behind the bike looking at it, you're generally taller and at a different angle vs. someone who would be sitting in a car. Try to get behind the bike, off to the side and low - at driver level - to see if it is really not visible. Better still, hop on the bike after dark and ride up and down the street and have someone look to see if it's visible as you ride away.
If it truely is blocked, then you've got some good recommendations here.
Me? I'm a fan of dreadful excess when it comes to lights. If I'm not sure it's visible, I'll stick a second on somewhere else - and I'm not averse to adding a 3rd!